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SL74LS161 - Synchronous 4 Bit Counters; Binary/ Direct Reset

Features

  • an internal carry look-ahead for.

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Datasheet Details

Part number SL74LS161
Manufacturer System Logic Semiconductor
File Size 46.17 KB
Description Synchronous 4 Bit Counters; Binary/ Direct Reset
Datasheet download datasheet SL74LS161 Datasheet

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Full PDF Text Transcription

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SL74LS161 Synchronous 4 Bit Counters; Binary, Direct Reset This synchronous, presettable counter features an internal carry look-ahead for application in high-speed counting designs. Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs change conicident with each other when so instructed by the count-enable inputs and internal gating. This mode of operation eliminates the output counting spikes that are normally associated with asynchronous (ripple clock) counters. A buffered clock input triggers the four flip-flops on the rising (positivegoing) edge of the clock input wave form. This counter is fully programmable; that is the outputs may be preset to either level.
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